For moving targets the received signal will change from pulse topulse, so the output from the delay-line MTI will be non-zero. ! Echoes from stationary clutter will be constant and thussuppressed. !frequently not provided due to inadequate power available tocover all aircraft quadrants, and the side of an aircraft istheoretically exposed to a threat 30% of the time over the averageof all scenarios.Typical radar cross sections are as follows: Missile 0.5 sq m; Tactical Jet 5 to 100 sq m; Bomber 10 to 1000 sq m; andships 3,000 to 1,000,000 sq m. RCS can also be expressed in decibels referenced to a square meter (dBsm) which equals10 log (RCS in m2).Again,For moving targets the received signal will change from pulse topulse, so the output from the delay-line MTI will be non-zero. ! Echoes from stationary clutter will be constant and thussuppressed. ! Figure 5 shows that these values can vary dramatically. The strongest return depicted in the example is 100 m2 inthe beam, and the weakest is slightly more than 1 m2 in the 135E/225E positions. These RCS values can be very misleadingbecause other factors may affect the results. For example, phase differences, polarization, surface imperfections, andmaterial type all greatly affect the results. In the above typical bomber example, the measured RCS may be much greaterthan 1000 square meters in certain circumstances (90E, 270E).SIGNIFICANCE OF THE REDUCTION OF RCSIf each of the range or power equations that have an RCS (F) term is evaluated for the significance of decreasing RCS,Figure 6 results. Therefore, an RCS reduction can increase aircraft survivability. The equations used in Figure 6 are asfollows:Range (radar detection): From the 2-way range equation in Section 4For moving targets the received signal will change from pulse topulse, so the output from the delay-line MTI will be non-zero. ! Echoes from stationary clutter will be constant and thussuppressed. !For moving targets the received signal will change from pulse topulse, so the output from the delay-line MTI will be non-zero. ! Echoes from stationary clutter will be constant and thussuppressed. !